Let's add equation 1 with equation 2 to eliminate the variable y and then calculate the value for x
[tex]\begin{gathered} x+y+x-y=4+7 \\ 2x=11 \\ x=\frac{11}{2} \\ \end{gathered}[/tex]Now let's calculate the value for x
[tex]\begin{gathered} y=x-7 \\ y=\frac{11}{2}-7 \\ y=-\frac{3}{2} \end{gathered}[/tex]The solution would be x = 11/2 y y = -3/2
